Published by Global Banking and Finance Review
Posted on September 4, 2025
2 min readLast updated: January 22, 2026
UK court allows Potanin's ex-wife to pursue a billion-dollar divorce claim involving Nornickel shares, overturning a previous ruling.
LONDON (Reuters) -Russian oligarch Vladimir Potanin's ex-wife can pursue a multi-billion dollar share of his stake in Nornickel, London's Court of Appeal ruled on Thursday allowing potentially one of the highest-value divorce cases ever brought to continue.
Potanin, the chief executive of Norilsk Nickel, the world's largest palladium producer and a major producer of refined nickel – is facing a mammoth divorce claim from his ex-wife Natalia Potanina.
Potanina wants to bring a claim for financial relief following their formal divorce in 2014, which includes a claim for 50% of the value of her ex-husband's ultimate beneficial interest in shares in Nornickel.
Potanina is also seeking 50% of any dividends paid to Potanin since 2014 and a high-end Russian property, on which the parties spent around $150 million.
Her lawyers say she received only $41.5 million, less than 1% of the couple's total assets, after their divorce, though Potanin said his ex-wife received around $84 million and argued the couple had no connection to Britain.
London's High Court originally rejected Potanina's bid to bring a claim in 2019, with a judge saying that if her claim was allowed to proceed "then there is effectively no limit to divorce tourism".
But on Thursday the Court of Appeal overturned that decision.
"There was evidence before the court ... that the wife had very largely severed her ties with Russia. Her connection to her former home country was increasingly tenuous," the court ruling said.
"The discrepancy between her award of the marital assets and the husband’s retained share was significant; the discrepancy between what she had recovered in Russia compared with what she would have recovered had the case been heard in this jurisdiction was equally significant."
(Reporting by Michael Holden and Sam Tobin, editing by William James)
The UK Court of Appeal ruled that Vladimir Potanin's ex-wife, Natalia Potanina, can pursue a multi-billion dollar claim for a share of his stake in Nornickel.
Potanina is seeking 50% of the value of her ex-husband's shares in Nornickel and any dividends paid since their divorce in 2014.
Potanina claims to have received only $41.5 million, which is less than 1% of the couple's total assets, while Potanin argues she received around $84 million.
London's High Court originally rejected Potanina's bid to bring a claim in 2019, stating that allowing her claim could lead to 'divorce tourism'.
The Court of Appeal noted that Potanina had largely severed her ties with Russia, and highlighted the significant discrepancy between her award of marital assets and Potanin's retained share.
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